Exhaust-muffler.



PATENTED SEPT. 11, 1906.

0 GOLDMAN EXHAUST MUFFLER. Arrmouo PILED .mu s, 1905.'

2 BEEBTS-SEEET 1.

u u p PATENTED SEPT. 11, 1906.

0. GOLDMAN.

EXHAUST MUFFLER.

APPLIOATION rILED JUNE a, 1905.

2 SEEETS SEEET 2.

. UNITED STATES PATENT cmos.

No. eso,oeo.

Qpecilleatio of Letters Patcnt. mban na Ju. a, mos. Sll Io. 204.207.

Patentod sept. 11 1906.

To (ll whom it may concem: I

Be it known that I, O''ro GOLDMAN, a citizen of the United States, residi at San Francisco, in the county of San rancisco and State of California, have invented certain new and useful Improvements in Exhaust-Muflers, of which the following is a specification. v

My invention relates to improvements-in exhaust-mufflers.

The object of my invention is to provide a muffler for explosive-engines which is sim le in construction and reduces the sound of t e discharge so as to be almost inaudible without throttling such discharge. y

My invention consists in the novel combination and arrangem'ent of arts shown in the accompanying drawings escribed in the following s ecification, and appended c aims.

n my device the deadening of the sound of 'the exhaust is caused by such an arrangement and combination of parts and apertures as to delay the different parts of the discharge, b makin such parts travel along different lengths o free path, thus causing no back ressure.

Re erring to the figures designated on the accom anyin drawings, Figure 1 represents a longtudina section of my device. Fig. 2 is a plan view of the same, and Fig. 3 s a transverse section on line X X of Fi 1. Fig. 4 shows a sectional View of a modi cation of the device wherein the casin 1 is omitted .and Fig. 5 shows a plan view o said modified device.

In the said figures, 1 represents a suitable cylindrical casing having an inlet 2 and an outlet 3 and having an intermediate tapering cylindrical case 8 and an inner tapering tube 4. The tube 4 contains apertures, such as shown at 5. The tube 4 has supports 9, contacting with the interior of the case 8.

' The exhaust enters through the inlet 2 into the tapering tube 4 and escapin by means of the holes 5 into the space 6 etween such tube 4 and case 8 partly ascends throu h the opening 7, whereupon it contacts wit the interior of the wall above the casing 1 and is there repelled downward'through the chamber 10, formed b the wall of said'casin lg 1 and case 8, to antf through the outlet 3. he arrows in Fig. 1 illustrate the path of the discharge from its entrance through inlet 1 to its escape through inlet 3 and by the breaking up of the full discharge as it enters claimed in the through inlet 2 into different'parts, escaping through the respective apertures 5 at va mg times and from thence as described, t e sound 'of such discharge is effectually muffled, the dischargepartly descending at the base ofthe ta ring tube as well as ascendbe somewhat modified without departing from the spirit of my invention.

' The discharge escaping gradually by the artan ement of openings, as shown in said mod' cation illustrated in Figs. 4 and 5, accomplishes the muffling of the sound, approximatin the result attained by the use of the device s own in Fig. 1.

It is understood that while I' have illustrated and described the preferred arrangement of m invention I reserve the right to make all o anges which properly fall within its s irit and scope.

aving thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In an exhaust-muffler the combination of a casing'having at one end thereof a neck constituting an inlet, a tapered tube coincident with said neck having a plurality of apertures, an intermediate tapered case surrounding said tube, out of contact with said tube and casing longitudinally and having end openings, a neck constituting an outlet at the opposite end of said case, substantially as described. se

2. In an exhaust-mufiler the combination of a casing having an inlet and a discharg'e opening, a tube in connection with said inlet having an aperturedbase and side openings and an intermediate case, Secured to said base and having a ertures, between said tube and the inner wal of said casing, and permitting pass& es between them, substantially as descri ed.

3. In an exhaust-mufier the combination of a casing having an inlet and a discharge opening, a tube in connection with said inlet having an a ertured base and side openings, an interme iate case, Secured to said base and having apertures, between said tube and IOO IIO

means for susv passages between them an case, substantaily as tainin thevwall of said descri ed.

4. In an exhaust-muffler the' combination of a casin having at one end thereof a cylindrical nec consttuting an inlet, a tapered cylindrical tube in connetion with said neck laving a plurality of apertures, -an intermeo diate cylndrical tapered case, out of contact with said neck, tube and casin'g, surroundin said tube longitudinally and a cylndrica neck eonstituting an outletout of contact with said tube and case, substantially as described.

5.' In an exhaust-muf fler the combinaton of a tapered tube having at one end an opening constituting an inlet and at the'other end an opening constituting an outlet and having a plurality of equidistant intermediate ope'n-, ings and ,a tapere'd'case having end o enings surrounding said tube and supporta thereby, substantially as deseribed. 1

' In-testimony whereof I affix my signature in presence of two witnesses. I

I OTTO GOLDMAN.

Wit'nesses: -AJRTHUR L. SLEE, L.'SONNTAG. o 

